WHYBACK
Returns prevention · Shopify · NL
WHYBACK
Opening
01/10
Instrument
P.01 · product — the instrument Read-only until you approve · rollback always armed

One app. Three moves.

Prevention, not management. Whyback works on the page where the return is decided — before the order is ever placed.

Install time4 min
Theme files edited0
Developer neededno
Undoone click
The fix is a section, not a rewrite.
P.02 · drag to repair the page →
Fix applied · 50%
Linen Shirt 04
€120,00
Relaxed fit, washed European linen. Model is 1.78 m and wears size M.
S M L XL
Add to cart
Before — no measurements on the page.
Linen Shirt 04
€120,00
Relaxed fit, washed European linen. Model is 1.78 m and wears size M.
Garment measurements · flat, cm
SIZECHESTLENGTHSLEEVE S1047061 M1107262 L1167464
Body ≠ garment. Measure a shirt you own flat.
S M L XL
Add to cart
After — one section added.
↔ FIX
P.03 · sequence
01 Diagnosis
02 Reversible fix
03 Measured delta
Move 1
It reads what your buyers already told you.

Whyback opens the return notes sitting in your admin and clusters them per product, in the customer’s own words. Nothing is published in this step — the app is read-only until you say otherwise.

It reads. It does not write, and it does not export.
Move 2
It repairs the page, reversibly.

One page section, added as a Shopify app block on the products you approve. Your theme files are never edited, so removing it leaves no trace at all.

Added as an app block. Removed in one click.
Move 3
It measures against your own catalog.

Ninety days before, ninety days after, adjusted against the products you left unfixed — with the caveat printed on the same record as the result.

The control is held, the horizon is fixed at 90 days, and the caveat is printed with the result.
P.04 · specification Rev. 03 · Linen Shirt 04 · signed off by you

Exactly what gets written. Nothing else.

One block, drafted from your own return notes, shown to you in full before it goes anywhere near the page. You approve the wording. You keep the draft.

AWaist, measured flat, per sizefrom your size chart
BFabric and stretchfrom your product copy
CHow it runs against the size orderedfrom 12 return notes
Everything else on the pageuntouched
Fit & fabric — added by Whyback
AWaist, size 3868 cm flat Waist, size 4072 cm flat Waist, size 4276 cm flat BFabricLinen, no stretch CRunsOne size small at the waist
Placed under the size selector Removable in one click
Draft shown at full size App block · theme files edited: 0
P.05 · permissions ledgerSigned on install
Reads
Return reasons, notes, order line items, product copy
Writes
One app-block section on the products you approve. Nothing else.
Never touches
Theme files, checkout, customer data exports, your return policy
Diagnosis by
Claude (Anthropic) · reviewed by you before anything is published
Instrument · read-only Rollback armed Theme files edited · 0
Coming soon to the Shopify App Store
The first five stores write the case study.
Email the founder
WHYBACK
WHYBACK

Returns prevention for Shopify apparel stores. Diagnosis, reversible fix, measured result. Built in the Netherlands.

Product
Product Method Pricing
Shopify App Store — soon
Principles
Never per-return fees
Every fix reversible
Honest when it fails
Company
Contact Privacy
© 2026 Whyback. Built in the Netherlands. No cookies, no tracking. Every figure on this site is an illustrative example. Diagnosis by Claude (Anthropic)